118 lines
4.6 KiB
ReStructuredText
118 lines
4.6 KiB
ReStructuredText
FAQ
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===
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What distribution is Proxmox Backup Server (PBS) based on?
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----------------------------------------------------------
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`Proxmox Backup`_ Server is based on `Debian GNU/Linux <https://www.debian.org/>`_.
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Which platforms are supported as a backup source (client)?
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----------------------------------------------------------
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The client tool works on most modern Linux systems, meaning you are not limited
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to Debian-based backups.
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Will Proxmox Backup Server run on a 32-bit processor?
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-----------------------------------------------------
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Proxmox Backup Server only supports 64-bit CPUs (AMD or Intel). There are no
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future plans to support 32-bit processors.
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.. _faq-support-table:
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How long will my Proxmox Backup Server version be supported?
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------------------------------------------------------------
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.. csv-table::
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:file: faq-release-support-table.csv
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:widths: 30 26 13 13 18
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:header-rows: 1
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How can I upgrade Proxmox Backup Server to the next point release?
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------------------------------------------------------------------
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Minor version upgrades, for example upgrading from Proxmox Backup Server in
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version 3.1 to 3.2 or 3.3, can be done just like any normal update.
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But, you should still check the `release notes
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<https://pbs.proxmox.com/wiki/index.php/Roadmap>`_ for any relevant notable,
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or breaking change.
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For the update itself use either the Web UI *Node -> Updates* panel or
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through the CLI with:
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.. code-block:: console
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apt update
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apt full-upgrade
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.. note:: Always ensure you correctly setup the
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:ref:`package repositories <sysadmin_package_repositories>` and only
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continue with the actual upgrade if `apt update` did not hit any error.
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.. _faq-upgrade-major:
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How can I upgrade Proxmox Backup Server to the next major release?
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------------------------------------------------------------------
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Major version upgrades, for example going from Proxmox Backup Server 2.4 to
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3.1, are also supported.
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They must be carefully planned and tested and should **never** be started
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without having an off-site copy of the important backups, e.g., via remote sync
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or tape, ready.
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Although the specific upgrade steps depend on your respective setup, we provide
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general instructions and advice of how a upgrade should be performed:
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* `Upgrade from Proxmox Backup Server 2 to 3 <https://pbs.proxmox.com/wiki/index.php/Upgrade_from_2_to_3>`_
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* `Upgrade from Proxmox Backup Server 1 to 2 <https://pbs.proxmox.com/wiki/index.php/Upgrade_from_1.1_to_2.x>`_
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Can I copy or synchronize my datastore to another location?
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-----------------------------------------------------------
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Proxmox Backup Server allows you to copy or synchronize datastores to other
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locations, through the use of *Remotes* and *Sync Jobs*. *Remote* is the term
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given to a separate server, which has a datastore that can be synced to a local store.
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A *Sync Job* is the process which is used to pull the contents of a datastore from
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a *Remote* to a local datastore.
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Can Proxmox Backup Server verify data integrity of a backup archive?
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--------------------------------------------------------------------
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Proxmox Backup Server uses a built-in SHA-256 checksum algorithm, to ensure
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data integrity. Within each backup, a manifest file (index.json) is created,
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which contains a list of all the backup files, along with their sizes and
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checksums. This manifest file is used to verify the integrity of each backup.
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When backing up to remote servers, do I have to trust the remote server?
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------------------------------------------------------------------------
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Proxmox Backup Server transfers data via `Transport Layer Security (TLS)
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<https://en.wikipedia.org/wiki/Transport_Layer_Security>`_ and additionally
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supports client-side encryption. This means that data is transferred securely
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and can be encrypted before it reaches the server. Thus, in the event that an
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attacker gains access to the server or any point of the network, they will not
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be able to read the data.
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.. note:: Encryption is not enabled by default. To set up encryption, see the
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:ref:`backup client encryption section <client_encryption>`.
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Is the backup incremental/deduplicated/full?
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--------------------------------------------
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With Proxmox Backup Server, backups are sent incrementally to the server, and
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data is then deduplicated on the server. This minimizes both the storage
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consumed and the impact on the network. Each backup still references all
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data and such is a full backup. For details see the
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:ref:`Technical Overview <tech_design_overview>`
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.. todo:: document our stability guarantees, i.e., the separate one for, in
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increasing duration of how long we'll support it: api compat, backup
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protocol compat and backup format compat
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